/*
 * Saphre - Suffix Arrays for Phrase Extraction
 * Copyright (C) 2013 
 * Dale Gerdemann - Tübingen, Germany 
 * Niko Schenk - Frankfurt am Main, Germany
 * All rights reserved.
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package saphre.commands;

import collectors.api.Collector1;
import collectors.impl.SuperMaximalsCollector;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.regex.Matcher;
import saphre.core.Store;
import saphre.core.SuffixArray;
import util.Interval;
import collectors.impl.visitors.CollectTraversal;

/**
 * Class to extract supermaximal repeats.
 * 
 * @author Niko Schenk
 */
public class CmdSuperMaximals {
    
    private int minLength = 1;
    private int maxLength = 7;
    private int minTermFrequency = 2;
    private String startsWith = "";
    
    PrintWriter writer = null;

    /**
     * 
     * @param store
     * @param sa
     * @param pa
     * @param top
     * @param m 
     */
    public void extractSuperMaximalPhrases(Store store, SuffixArray sa, SuffixArray pa, Interval top, Matcher m) {
        
        try {
            writer = new PrintWriter("supermaximals.txt");
        } catch (FileNotFoundException ex) {
        
        }
        
        getUserSpecificParameters(m);
        
        // Top down traversal of the lcp interval tree to find supermaximal repeats.
        Collector1 collect = new SuperMaximalsCollector(store, sa, writer, minLength, maxLength, minTermFrequency, startsWith);
        CollectTraversal p =
                new CollectTraversal(store, sa, collect, top);
        p.traverse();
        
        
        writer.flush();
        writer.close();
        
    }

    /*
     * Get user-specific parameter values.
     */
    private void getUserSpecificParameters(Matcher m) {
        // Get user input.
        if(m.group(1) != null) {
            minLength = Integer.parseInt(m.group(2));
        }
        if(m.group(3) != null) {
            maxLength = Integer.parseInt(m.group(4));
        }
        if(m.group(5) != null) {
            minTermFrequency = Integer.parseInt(m.group(6));
        }
        if(m.group(7) != null) {
            startsWith = m.group(8).toString();
        }
    }
}
